Power-Off or Restart an android device via Code/Program?

问题:

Is there any way to restart/shutdown a phone directly from an application?

For Example: I need to restart/shutdown my Phone when i meet some specific condition...

Citations to Developer Website:

Permission to Reboot?

http://developer.android.com/reference/android/Manifest.permission.html#REBOOT

Permission to Brick the device???

http://developer.android.com/reference/android/Manifest.permission.html#BRICK

Method to reboot???

http://developer.android.com/reference/android/os/PowerManager.html#reboot%28java.lang.String%29

Method to reboot and Wipe??

http://developer.android.com/reference/android/os/RecoverySystem.html#rebootWipeUserData%28android.content.Context%29

Reboot Method in MonkeyRunner/MonkeyDevice:

http://developer.android.com/guide/developing/tools/MonkeyDevice.html#reboot

There are options to brick a device but why not to power-down or restart?

I tried the following code but it throws an exception..

Manifest.xml:

Java Code:

package com.schogini.PowerOff;   import android.app.Activity; import android.content.Context; import android.os.Bundle; import android.os.PowerManager; import android.view.View; import android.widget.Button;   public class PowerOffActivity extends Activity {      PowerManager pm;      /** Called when the activity is first created. */     @Override     public void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.main);         pm = (PowerManager) getSystemService(Context.POWER_SERVICE);         Button mBuyButton = (Button) findViewById(R.id.button1);          mBuyButton.setOnClickListener(new View.OnClickListener()          {             public void onClick(View v)              {                 pm.reboot("null");             }         });     } } 

Exception thrown in LogCat:

06-10 17:58:29.001: WARN/dalvikvm(2064): threadid=3: thread exiting with uncaught exception (group=0x4001b160) 06-10 17:58:29.001: ERROR/AndroidRuntime(2064): Uncaught handler: thread main exiting due to uncaught exception 06-10 17:58:29.011: ERROR/AndroidRuntime(2064): java.lang.NoSuchMethodError: android.os.PowerManager.reboot 06-10 17:58:29.011: ERROR/AndroidRuntime(2064):     at com.schogini.PowerOff.PowerOffActivity$1.onClick(PowerOffActivity.java:28) 06-10 17:58:29.011: ERROR/AndroidRuntime(2064):     at android.view.View.performClick(View.java:2364) 06-10 17:58:29.011: ERROR/AndroidRuntime(2064):     at android.view.View.onTouchEvent(View.java:4179) 06-10 17:58:29.011: ERROR/AndroidRuntime(2064):     at android.widget.TextView.onTouchEvent(TextView.java:6545) 06-10 17:58:29.011: ERROR/AndroidRuntime(2064):     at android.view.View.dispatchTouchEvent(View.java:3709) 06-10 17:58:29.011: ERROR/AndroidRuntime(2064):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 06-10 17:58:29.011: ERROR/AndroidRuntime(2064):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 06-10 17:58:29.011: ERROR/AndroidRuntime(2064):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 06-10 17:58:29.011: ERROR/AndroidRuntime(2064):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 06-10 17:58:29.011: ERROR/AndroidRuntime(2064):     at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1659) 06-10 17:58:29.011: ERROR/AndroidRuntime(2064):     at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1107) 06-10 17:58:29.011: ERROR/AndroidRuntime(2064):     at android.app.Activity.dispatchTouchEvent(Activity.java:2061) 06-10 17:58:29.011: ERROR/AndroidRuntime(2064):     at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1643) 06-10 17:58:29.011: ERROR/AndroidRuntime(2064):     at android.view.ViewRoot.handleMessage(ViewRoot.java:1691) 06-10 17:58:29.011: ERROR/AndroidRuntime(2064):     at android.os.Handler.dispatchMessage(Handler.java:99) 06-10 17:58:29.011: ERROR/AndroidRuntime(2064):     at android.os.Looper.loop(Looper.java:123) 06-10 17:58:29.011: ERROR/AndroidRuntime(2064):     at android.app.ActivityThread.main(ActivityThread.java:4363) 06-10 17:58:29.011: ERROR/AndroidRuntime(2064):     at java.lang.reflect.Method.invokeNative(Native Method) 06-10 17:58:29.011: ERROR/AndroidRuntime(2064):     at java.lang.reflect.Method.invoke(Method.java:521) 06-10 17:58:29.011: ERROR/AndroidRuntime(2064):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 06-10 17:58:29.011: ERROR/AndroidRuntime(2064):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 06-10 17:58:29.011: ERROR/AndroidRuntime(2064):     at dalvik.system.NativeStart.main(Native Method) 

回答1:

Not a standard Android distribution, no. Suitably rooted phones often have access to su/reboot commands, but for an off-the-shelf, commercially available device, no: there is no way to do it.

回答2:

you need to sign the application with signapk. jar using the following command:

java -jar signapk.jar platform.x509.pem platform.pk8 .apk .apk

for this you need to download and build android source code and flash it on a device. You can find the signapk.jar in the \out\host\linux-x86\framework directory.

for more details please refer to the following link: http://groups.google.com/group/Android-DevPhone-Updating/tree/browse_frm/month/2010-04?_done=/group/Android-DevPhone-Updating/browse_frm/month/2010-04?&&pli=1

回答3:

Yes, you can if your device is rooted then try below solution,

Shutdown:

try {     Process proc = Runtime.getRuntime()                     .exec(new String[]{ "su", "-c", "reboot -p" });     proc.waitFor(); } catch (Exception ex) {     ex.printStackTrace(); } 

Restart:

Same code, just use "reboot" instead of "reboot -p".

文章来源: Power-Off or Restart an android device via Code/Program?